Gemini 2.5 Pro vs Kimi K2
Google Gemini 2.5 Pro | Moonshot AI Kimi K2 | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | |
| Release date | Mar 25 2025 | Jul 11 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 128k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 20%Best | 10% |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 59.6% | 65.8%Best |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 86.4%Best | 75.1% |
Multimodal MMMUTests the AI on understanding images and text together across many college subjects. Higher is better. | 68% | — |
| Timeline | ||
| Release gap | Gemini 2.5 Pro shipped 108 days before Kimi K2 | |
Which is better: Gemini 2.5 Pro or Kimi K2?
Gemini 2.5 Pro leads Kimi K2 on 2 of the 3 benchmarks they both report (BullshitBench v2, SWE-Bench Verified, GPQA Diamond). Gemini 2.5 Pro shipped 108 days before Kimi K2, so benchmark comparisons should account for the intervening progress.
Gemini 2.5 Pro is proprietary, while Kimi K2 is open weight.
On BullshitBench v2, Gemini 2.5 Pro leads at 20% vs Kimi K2 at 10%. On SWE-Bench Verified, Kimi K2 leads at 65.8% vs Gemini 2.5 Pro at 59.6%. On GPQA Diamond, Gemini 2.5 Pro leads at 86.4% vs Kimi K2 at 75.1%.
Frequently asked questions
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Kimi K2 was released by Moonshot AI on Jul 11 2025.
Kimi K2 leads on SWE-Bench Verified — Gemini 2.5 Pro 59.6% vs Kimi K2 65.8%.
Gemini 2.5 Pro leads on GPQA Diamond — Gemini 2.5 Pro 86.4% vs Kimi K2 75.1%.
Gemini 2.5 Pro is a proprietary model released by Google. Kimi K2 is an open weight model released by Moonshot AI.